Schumacher Electric DSR ProSeries 12V / 24V Battery Charger - Heavy Duty 200A Manual Battery Charger & Engine Starter - Car, Truck & SUV Compatible - 135-Minute Timer & Amperage Control - DSR140

Best ever for charging. Wish I had bought this sooner. I am now the neighborhood hero.

Definitely not everybody needs a charger this big. I went this big because I wanted a manual charger besides my smaller "smart” charger. I also wanted one with a 200+ amp, start, setting for doing some battery rejuvenating trials of old batteries (more tinkering), as I have seen done online. This charger had what I was looking for and for its size was very reasonably priced. It does everything I want a battery charger to do. Plus, it is made by a company, Schumacher Electric, that has been in the business for over 70 years so they must be doing something right. I had one of their chargers for over 30 years before something finally broke on it.Too many battery chargers, made today, are so called "smart" chargers. That is fine for people that don't understand battery charging and just want to put the charging cables on a battery and walk away.Being an "Old Guy", I am used to the old "dumb" manual battery chargers and they definitely have advantages that the new "smart" chargers don't have.As far as I know none of the "smart" chargers will charge a completely dead battery that is below 8 or 9 volts. For reference a fully charged 12-volt battery, in good shape fully charged, should measure no less than 12.6 volts. It is considered discharged or "dead" at 10.5 volts. At that voltage a "smart" charger will recognize it and will charge it.But I have had numerous instances where a battery's voltage is too low for a "smart" charger to work. No doubt people have replaced their battery because their "smart" charger wouldn't charge it and they thought the battery was bad. A lot of times all the battery needs is a little boost in voltage, to say 10 volts, so the "smart" charger can "see" it and charge it.Here is where having a "dumb", manual, charger comes into play. Hook the battery up to it first for a while, then put the "smart" charger on it if you want to walk away. Or leave it on the "dumb" charger but you will need to be around to monitor it and should really, at a minimum, have a volt meter to check the voltage. Better yet a volt meter and a battery tester. This is obviously for the "DIYer" as I realize a lot of people don't have the time or aptitude to do this.Being an old retired guy who has tinkered with cars and motorcycles since a kid. I have both the time and the aptitude and I enjoy tinkering.

First one I got came broken in the box, the base (plastic) was cracked and non functional to provide support for the charger.The second one I got lasted close to a year (extremely light, general use)..only used the start mode a handful of times, and 10amp for just normal charging of batteries.I went to charge a battery the other day, and it won't put out any amperage/voltage on any setting, except for the jump start/200+amp mode. Basically, it only outputs 200+amps at all times, which is nice, but won't allow for a normal steady charge or maintenance low amperage charge.I looked through the vents and saw that a capacitor has blown on the circuit board.We also use Schumacher battery chargers at my work (semi truck shop) and we are constantly replacing them. ( They are the automatic/''smart'' chargers though)..but nonetheless, they have a terrible rate of failure. We have went through 4 of them in the last few years. I should've bought another brand, but thought that since this charger is a manual charger and not a "smart" one, it wouldn't fail so soon..lol..Based on my experience with this brand, my opinion is that I don't think that Schumacher chargers are very reliable.If you want a reliable charger that will serve you for years, THIS ONE IS NOT IT..Also, this morning I had to jump start my pick-up (after sitting for about a month) and found the chargers timer knob does not function/turn on the charger anymore, so I had to push the truck out of my garage and out of my driveway so I could jump start it with my wife's truck. Usually you can feel a slight resistance on the knob when rotating it, but now it just free spools....So yeah, wish it would've lasted longer than 2 years.I think I'm going to take it apart and see if I can bypass the timer and install a battery shutoff switch in its place... If not, it's going out with the trash

eXCELENTE

The bottom was a little stoved in but the legs covered it and the damage didn’t effect the screw holes to put the legs on

This battery charger is a game changer for me. It will even help jump a 6.0 diesel!

Heavy duty works great

Had this for awhile now. Former GM service tech familar with the midtronics GR-8 battery/charging systems diagnostic station. The GR-8 is a 60amp charger along with a bunch of other stuff. This is 50 amps and doesnt care about safety this and that. You turn that knob and amps are going to come out of those clamps and alot of them. Dim your shop lights amount of amps. Reccomend having on a 20 amp breaker. Havent used it heavily but man is it nice being able to charge customers dead batteries in about 2 hours instead of overnight with every other charger ever. Can even use it to function test starters if you know what your doing. Just dont use any more then the 10 amp setting. On 10 amps while connected to a starter on the bench the amps guage needle buries itself beyond 60 amps. Can also use it to maintain *close-ish* to charging voltage with ignition on engine off for testing purposes.The clamps are decent quality and the function knob has a heavy snap action to it. On/off/timer knob feels quality too. It says on the back there is a max 10amp continous 12v charge but when i put it on 50amps it seems to stay on 50 amps but i havent tested on a flat battery yet.